We all knew Rihanna was a freak (“S&M” anyone?), but she showed just how freaky she can get during her “LOUD” tour kickoff at Baltimore’s 1st Mariner Arena on Saturday night (June 4). RiRi, dressed in the white bondage-inspired outfit from her Billboard Music Awards performance, invited a female fan onstage and straddled her on a revolving platform while her sexy Loud cut “Skin” played. We like it, like it.